)
Match this pattern against the start of string.
If start is provided, it must be an integer in the range 0 ..
string.length. In that case, this patten is tested against the
string at the start position. That is, a Match is returned if the
pattern can match a part of the string starting from position start.
Returns null if the pattern doesn't match.
Source
/**
* Match this pattern against the start of `string`.
*
* If [start] is provided, it must be an integer in the range `0` ..
* `string.length`. In that case, this patten is tested against the
* string at the [start] position. That is, a [Match] is returned if the
* pattern can match a part of the string starting from position [start].
* Returns `null` if the pattern doesn't match.
*/
Match matchAsPrefix(String string, [int start = 0]);